Caption
Blackboard during maths lesson.
Photo: Rob Lewine
Date
2012
Credit line
Photo12/Tetra Images
Reference
TTM12A32_111
Model release
No
License type
Royalty free
Available size
49,6Mb (2,1Mb) / 17,0in x 11,3in / 5100 x 3399 (300dpi)